Improvement in power-looms



UNITED STATES ENRY n oLen'oFr,v on Mania, AND CANI-irs.' SLi-11TH, or cnnsrnu VALLEY,y

PnNssrnvANrA..

iMPaovEMEu-r iN Po wea-#Llcowls.

` Speetiation formingpart of Letlc'rslntent No. 3,5S3, dated July i9, 18,64l

l To all' whom it may concern: 4 Be it'known that we, HENRY HoLcRoF'r; otf l Media, in the county ot' Delaware andState of Pennsylvania, aml OANBY S. SMITH, of Chespter Valley, in the county of Chester and State of Pennsylvania, have invented certain new.

and useful Improvements in Power-Looms; and we do hereby declare th at' thefollowingfisa full, clear,'and exact description ofthe same, l 'reference -heilig had to. the accompanying drawings, forming part ot this spccilieation, in

which r y .Figure l is a transverse vertical section of a loom,taken beh-ind the crank-shaft and showing allthe principal parts bn-tthe yarn-beam, [whip roll, and let-ott' apparatus.- F ig..2 is a: f longitudinal vertical section ot' the same, taken justafvithin oneof'theside frames, Fig..3 isa ,p'lanfo the shuttle-motionL- l Fig. 4 is a sec .tional view ofthe principal partsot' the harness-motion in a plane.parallelfwith Eiga-1 Similar letters tot" reference indicate corre spendingv partsintbcseveral figures. v l This invention' consists in certain improved- "means of-'driving thefjshut'tle trom.-them'ain shalt ot the loom without the iuterventionof any -other shaft,"thereby .obviating the necessity for more than oneshatt in a power-loom and greatly simplifying it.

Italso consists in certain improvementsin,

theharness-motion for fancy weaving, whereby;

,it is much simplified.

Toenable others skilled in'the art to make and' use our invention, we will proceed to de Iscribe its construction and operation;

A isthe main framing ot' the loom. B is the main or crank shaft,.whioh drives the lay E, arranged in the usual p'osi'tion in,

suitable bearings on the framing A.

C C' are the picker-Steves, arranged to vibrateon pinsa a., which 'attachA them to the -Ifront of the 1ay'E, and 'having their rounded lower parts connected-by straps 'or cords b b' rectly over the two levers D D', and operating tupon the inclined surfaces d of the said levers to produce their depression, and thereby produce the movementof the pickersta-ves toward the center ofthe loom, by which the shuttleis thrown., The said cams arearranged in line witlreachother, so that if the two 'levers al- .wnys occupied corresponding positions the said cams would a`ct 4upon them simultaneonsly; but as only one picker is required to operate'during each revolution ot.' the shaft, and thetwo are lrequired to alternate4 with each other in theimoperation, it is nccessary that oneor the other should be 'kept outot the range-ot its respective cam during-'each revolution of the shaft, leaving one only in position to be aetednpon. lhis is 'done by means of two vibrating stops, G; and G,hingcd v at e e tothe two side frames ot the loom, as' shown in Figs. 1,2, and 3, and connected to-l gether by a rod, f, (shown in Fig. 1,) in such manner-that both may move ltogether tothe' right orleft, but thatvneither canso move .without the other, and that when'thepoint'-of one is brought to a' position'over therearcnd of its respective'lever, in which it stops or pref vents that end of the said 4lever1 from rising', as shown at the letftjside of. Fig. 1', the other .lieslsiiugly against the side ofthe loom-fram# ing', as 'shown'atvth'e `rightsideof Iiig;1, in' such ai position that it does notintcrte're with the movement Iof its 4respective lever. The stop g' is connected by a short'rodg'g, with a horizontally-moving lever, H, which works on. atixed tule-rum, h, secured outside of the fraini ingot` thelooxn. `This lever is furnished withl Va swivetto'oth h',- wh'ichvworks inthe two grooves het' acam 'I on' the shaft B, the- "said .grooves being parallel'with each other' and with the/planes of revolutionot ythe cam upon the greaterportion of the circuinference of the latter, but `united with eachother by two. oblique crossing connections,-=as shown in lFg.'1, so that once in every revolution of the cam the swivel-tooth h A may be caused to cross from one-groove to the other,rem'aining in one-groove during one revolution of the shaft B', and in the other groove in the next revolution.. This action of the cam upon the' tooth h. produces a-` quick movement vof L the lever H and the stops'G G' to the v'right and left, alternately drawing the successiverevospring, J, which connects the two picker- 'lntions of the shaft, the said movement tak- 1n g place quickly and being completed at the same moment that the camsF F would have completed the depressi-on of their respective levers D D/.f The ettect of this'movement isto bring oneorfot'her 'of the stops G G over the rear endof its respective lever D orDl after the said leverhas beende'pressed. by its4 respectivev cam, and therebyv preventthe said lever from rising again, at the same time removing the othery stop .from above the other acted upon duri'ng each re'volutionof the shaft and one picker-'statt is actuatedtodrive the shuttle during one revolution and the otherv during the next revolution. -Thc picker staves 'are drawn back and the leversraised, as soon as the' latter areblibeated, by means of a staves togeth'er below the pivots c a.

K K and K" K are 'twoA sets of jacks, between which the heddleframes L L are arranged, and with which they are connected in4 lthe usual manner, the upper set ot' -jaeks being arranged to vibrate on a short shaft,.. 7`,

.supportedA in standards k on the top frame, A',

of the loom, and thelower set being arranged to vibrateuponv a stationary shaft, j. From the outer ends of' the'upper jacksv there are.

'suspended the hooks M M,"which are also connected by wiresl l with the outer ends ot the tower jacks.

The hooks .M M hav .each a notch, m, in its outer edge antl.a.r 1 1ot'(`zh,4 1n',- in its inner.'edge, the latter notchbein g arranged to receive the edge ofthe knife fn', bywhich the said hooks are depressed. andthe former notch being' arrangedto receive the edge of. the knife 11"by` which the saidhooksarelfted, the said knives beingextended across the )whole series of. hooks and Ibeing attached each'to one of-two levers, N Nv', which work onfthe-samehxed fnl- Between these levers therev is'..arrangcd .in suitable bearin gs in 'theframeA a rock-shaft, q, onwhiich is secured a v two armed rocker, r

r' one' arm 1'- of which `acts u4 'on the upper.

lever, N, for the purpose ofraisin'g the knife n, liftingthe jacks, andd'epressing the harness,

and the other, r', acts 'upo'the lower lever-,NQ

for the purpose of depressing .theknife n and again as the rocker returns by the action ofthe rocker under a projection,"8,-providedonthe,

said lever for'the purpose. 'lhe rock-shaft q derives 'the motion necessary to eti'ect the 'opening' of the shed from A a cam, P,o'i `i the shaft B, thessaid cam .operating upon a slldin g yoke-rod, Q,',which'w o1ks in a nearly vertical direction ona stationary gade, b, provided onl tl-ieffr'aming A', and the upper part of which-isjslotted toreceive the end of an arm, qi, which is secured rigidly on the rear end ot' the rockshaft q.

S' is the cylinder'which carriesv the patternchain T. vThis'cylinder and chain are of the lusual` construction,but -thfeveylinder -isfsoinewhat differently applied-that is to say, it is arrangedinbearings .in thefnpper part of a vibrating frame, Si', the lower end ot' which is pivoted at u! to the frame A. The said frame hasapplicd to it alspring,;u2, which presses it toward the hooks M M.

On the rear end of the cylinder S fthereis .a ratchetwl1eel, fv, which is operated .upon to.

'produce the revolution of thecylinder by means. of 'a hooked pawl,v, attached tothe upper part ofthe sliding yokel'r'djQ, herein' 'b :fore mentioned. This pawl-is so hung that it operates' upon the Vracl ietvheel 'during the upward movement ot' the r'od Q, but passes freely bverthe teeth Vot' the'ratchet-wheel in' Aits downwardmoveinent.

.During the operation of' the pawl-the teeth 'of the 'ratchet 'wheel rest against the sliding. rod Q, whch,jbeing unyielding and having an' 'inclination as lshown in Fig.v I, causes the ratchet-wheel, cylinder, 'and frame Sitte swing back away from thehooks M M', thereby greatly easing'the movement of the chain by 'prevent- 'ing'its'pins from dragging continually againstthe, hooks M M. As vthel pattern-chain' revolves, those hooksM M which have thefpinsofthe chain presented opposite-to' thennf by the movement jofthe chain are .pressed inward'l to ward' the knifen, andcaused to be caught by that knil'e'which in .its descent pui-Ls downl those hooks andl thereby raisesthe attached leaves ot' harness, while the hooks which have no pins prescntedfopposte'tothcm arecaught by the knife, n, whichf in itsA ascent raises those hooks, and thereby 'produces the depression of `theattached leaves of'harness.-

Whatclaim as our invention, and desire to4 secure byLetters' Patent, is`

1. The combination of two canis,I1 -F{, on the main or crank shaft ottheloom, two levers, D

.DQ interposed between thesaid cams and the-r picker-strives, and twomovable stops,'Gr` G',

or their'equivalents, the wholeloperativng, s nb stantially as j herein described, to obtain the shuttlemotion from' the main shaft.

' 2. Placingthe' pattern-.cylinders 'in avibrating frame, 5*, when the cylinder is operated by.

a notched rod, Q, eccentricall y attached to the vr'nainshaft of the loom.

3.- TheTock-shat'tq, t'he'rockeri` r and the leversN N",. whicl1'carry the knives .n n', the

-Whole arranged in= combination `'with' each4 other and with thev jacks and hooks toopcrate substantially as herein specified.

'HENRYHOLCROFE Witnesses: OANBY; S. SMITH.

JAMES HoLcoF'r,

-J on'N-'W. STEEN. 

